Leak testing using tracer gas permeable membrane

Details Leak testing using tracer gas permeable membrane Leak testing using tracer gas permeable membrane

2011-03-15

2011-03-15

Fitzgerald, John (Department: 2856)

Measuring and testing

With fluid pressure

Leakage

C073S049200

Reexamination Certificate

active

07905132

ABSTRACT:
Leak testing using a testing chamber into which a test part may be configured for testing. The test part defines a leak test boundary to be tested. Tracer gas is introduced into a first volume on one side of the leak test boundary. A vacuum (e.g., a rough vacuum) may be introduced into a second volume on the opposite side of the leak test boundary. A tracer gas permeable membrane is placed in situ within the second volume, or at least in gaseous communication with the second volume perhaps within or rigidly attached to the wall of the chamber. During testing, if some of the tracer gas introduced into the first volume were to leak through the leak test boundary defined by the test part into the second volume, at least some of that tracer gas may pass the tracer gas permeable membrane for subsequent detection.

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WO 2006/032591A1 Inficon GMBH. Leak Testing Method and Leak Testing Device Comprising a Partial Pressure Sensor.
Schroder, Gehard. Neue Norm Zur Auswahl eines geeigneten Verfahrens zur Lexsuch and Dichtheitsprufung. ZfP-Zeitung 74. Apr. 2001. 31-39.
Falcon Leak Test Systems, 2003 by Cincinnati Test Systems Inc., (2 pages) (Attached as Article 1).
Laco Technologies, Production Leak Testing, Theory and Application, The Why, What, and How of Production Leak Testing, 2005., (16 pages) (Attached as Article 2).

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